mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
3.8 KiB
131 lines
3.8 KiB
/***
|
|
*xwcscoll.c - Collate wide-character locale strings
|
|
*
|
|
* Copyright (c) 1996-2001, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* Compare two wchar_t strings using the locale LC_COLLATE information.
|
|
*
|
|
*Revision History:
|
|
* 01-XX-96 GJF Created from wcscoll.c January 1996 by P.J. Plauger
|
|
* 04-18-96 GJF Updated for current locale locking. Also, reformatted
|
|
* and made several cosmetic changes.
|
|
* 12-02-97 GJF Removed bogus codepage determination.
|
|
* 01-12-98 GJF Use _lc_collate_cp codepage.
|
|
* 01-05-99 GJF Changes for 64-bit size_t.
|
|
* 05-11-99 PML Win64 fix: cast ptr diff to int
|
|
* 01-29-01 GB Added _func function version of data variable used in msvcprt.lib
|
|
* to work with STATIC_CPPLIB
|
|
*
|
|
*******************************************************************************/
|
|
|
|
|
|
#include <cruntime.h>
|
|
#include <windows.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <locale.h>
|
|
#include <setlocal.h>
|
|
#include <mtdll.h>
|
|
#include <errno.h>
|
|
#include <awint.h>
|
|
#include <xlocinfo.h> /* for _Collvec, _Wcscoll */
|
|
|
|
/***
|
|
*static int _Wmemcmp(s1, s2, n) - compare wchar_t s1[n], s2[n]
|
|
*
|
|
*Purpose:
|
|
*
|
|
*Entry:
|
|
*
|
|
*Exit:
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
static int _Wmemcmp(
|
|
const wchar_t *s1,
|
|
const wchar_t *s2,
|
|
int n
|
|
)
|
|
{
|
|
for (; 0 < n; ++s1, ++s2, --n)
|
|
if (*s1 != *s2)
|
|
return (*s1 < *s2 ? -1 : +1);
|
|
return (0);
|
|
}
|
|
|
|
/***
|
|
*int _Wcscoll() - Collate wide-character locale strings
|
|
*
|
|
*Purpose:
|
|
* Compare two wchar_t strings using the locale LC_COLLATE information.
|
|
* In the C locale, wcscmp() is used to make the comparison.
|
|
*
|
|
*Entry:
|
|
* const wchar_t *_string1 = pointer to beginning of the first string
|
|
* const wchar_t *_end1 = pointer past end of the first string
|
|
* const wchar_t *_string2 = pointer to beginning of the second string
|
|
* const wchar_t *_end2 = pointer past end of the second string
|
|
* const _Collvec *ploc = pointer to locale info
|
|
*
|
|
*Exit:
|
|
* -1 = first string less than second string
|
|
* 0 = strings are equal
|
|
* 1 = first string greater than second string
|
|
* This range of return values may differ from other *cmp/*coll functions.
|
|
*
|
|
*Exceptions:
|
|
* _NLSCMPERROR = error
|
|
* errno = EINVAL
|
|
*
|
|
*******************************************************************************/
|
|
|
|
int __cdecl _Wcscoll (
|
|
const wchar_t *_string1,
|
|
const wchar_t *_end1,
|
|
const wchar_t *_string2,
|
|
const wchar_t *_end2,
|
|
const _Collvec *ploc
|
|
)
|
|
{
|
|
|
|
int n1 = (int)(_end1 - _string1);
|
|
int n2 = (int)(_end2 - _string2);
|
|
int ret;
|
|
LCID handle;
|
|
#ifdef _MT
|
|
int local_lock_flag;
|
|
|
|
_lock_locale( local_lock_flag )
|
|
#endif
|
|
if (ploc == 0)
|
|
handle = ___lc_handle_func()[LC_COLLATE];
|
|
else
|
|
handle = ploc->_Hand;
|
|
|
|
if (handle == _CLOCALEHANDLE) {
|
|
int ans;
|
|
_unlock_locale( local_lock_flag )
|
|
ans = _Wmemcmp(_string1, _string2, n1 < n2 ? n1 : n2);
|
|
return ans != 0 || n1 == n2 ? ans : n1 < n2 ? -1 : +1;
|
|
}
|
|
|
|
if (0 == (ret = __crtCompareStringW(handle,
|
|
0,
|
|
_string1,
|
|
n1,
|
|
_string2,
|
|
n2,
|
|
___lc_collate_cp_func())))
|
|
{
|
|
_unlock_locale( local_lock_flag )
|
|
errno = EINVAL;
|
|
return _NLSCMPERROR;
|
|
}
|
|
|
|
_unlock_locale( local_lock_flag )
|
|
return (ret - 2);
|
|
|
|
}
|